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SET @@session.default_storage_engine = 'InnoDB';
#
# Section 1. Wrong column definition options
# - NOT NULL
# - NULL
# - DEFAULT <value>
# - AUTO_INCREMENT
# - [PRIMARY] KEY
# NOT NULL
create table t1 (a int, b int as (a+1) not null);
ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'not null)' at line 1
create table t1 (a int);
alter table t1 add column b int as (a+1) not null;
ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'not null' at line 1
drop table t1;
# NULL
create table t1 (a int, b int as (a+1) null);
ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'null)' at line 1
create table t1 (a int);
alter table t1 add column b int as (a+1) null;
ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'null' at line 1
drop table t1;
# DEFAULT
create table t1 (a int, b int as (a+1) default 0);
ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'default 0)' at line 1
create table t1 (a int);
alter table t1 add column b int as (a+1) default 0;
ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'default 0' at line 1
drop table t1;
# AUTO_INCREMENT
create table t1 (a int, b int as (a+1) AUTO_INCREMENT);
ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'AUTO_INCREMENT)' at line 1
create table t1 (a int);
alter table t1 add column b int as (a+1) AUTO_INCREMENT;
ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'AUTO_INCREMENT' at line 1
drop table t1;
# [PRIMARY] KEY
create table t1 (a int, b int as (a+1) key);
ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'key)' at line 1
create table t1 (a int, b int as (a+1) primary key);
ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'primary key)' at line 1
create table t1 (a int);
alter table t1 add column b int as (a+1) key;
ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'key' at line 1
alter table t1 add column b int as (a+1) primary key;
ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'primary key' at line 1
drop table t1;
# Section 2. Other column definition options
# - COMMENT
# - REFERENCES (only syntax testing here)
# - STORED (only systax testing here)
create table t1 (a int, b int as (a % 2) comment 'my comment');
show create table t1;
Table Create Table
t1 CREATE TABLE `t1` (
`a` int(11) DEFAULT NULL,
`b` int(11) GENERATED ALWAYS AS (`a` MOD 2) VIRTUAL COMMENT 'my comment'
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_uca1400_ai_ci
describe t1;
Field Type Null Key Default Extra
a int(11) YES NULL
b int(11) YES NULL VIRTUAL GENERATED
drop table t1;
create table t1 (a int, b int as (a % 2));
alter table t1 modify b int as (a % 2) comment 'my comment';
show create table t1;
Table Create Table
t1 CREATE TABLE `t1` (
`a` int(11) DEFAULT NULL,
`b` int(11) GENERATED ALWAYS AS (`a` MOD 2) VIRTUAL COMMENT 'my comment'
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_uca1400_ai_ci
describe t1;
Field Type Null Key Default Extra
a int(11) YES NULL
b int(11) YES NULL VIRTUAL GENERATED
insert into t1 (a) values (1);
select * from t1;
a b
1 1
insert into t1 values (2,default);
select a,b from t1;
a b
1 1
2 0
create table t2 like t1;
show create table t2;
Table Create Table
t2 CREATE TABLE `t2` (
`a` int(11) DEFAULT NULL,
`b` int(11) GENERATED ALWAYS AS (`a` MOD 2) VIRTUAL COMMENT 'my comment'
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_uca1400_ai_ci
describe t2;
Field Type Null Key Default Extra
a int(11) YES NULL
b int(11) YES NULL VIRTUAL GENERATED
insert into t2 (a) values (1);
select * from t2;
a b
1 1
insert into t2 values (2,default);
select a,b from t2;
a b
1 1
2 0
drop table t2;
drop table t1;
create table t1 (a int, b int as (a % 2) persistent);
show create table t1;
Table Create Table
t1 CREATE TABLE `t1` (
`a` int(11) DEFAULT NULL,
`b` int(11) GENERATED ALWAYS AS (`a` MOD 2) STORED
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_uca1400_ai_ci
describe t1;
Field Type Null Key Default Extra
a int(11) YES NULL
b int(11) YES NULL STORED GENERATED
insert into t1 (a) values (1);
select * from t1;
a b
1 1
insert into t1 values (2,default);
select a,b from t1;
a b
1 1
2 0
drop table t1;
create table t2 (a int);
create table t1 (a int, b int as (a % 2) persistent);
show create table t1;
Table Create Table
t1 CREATE TABLE `t1` (
`a` int(11) DEFAULT NULL,
`b` int(11) GENERATED ALWAYS AS (`a` MOD 2) STORED
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_uca1400_ai_ci
drop table t1;
create table t1 (a int, b int as (a % 2));
alter table t1 modify b int as (a % 2) persistent;
ERROR HY000: This is not yet supported for generated columns
show create table t1;
Table Create Table
t1 CREATE TABLE `t1` (
`a` int(11) DEFAULT NULL,
`b` int(11) GENERATED ALWAYS AS (`a` MOD 2) VIRTUAL
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_uca1400_ai_ci
drop table t1;
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